694 lines
25 KiB
C
694 lines
25 KiB
C
/*
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* Nuklear - v1.32.0 - public domain
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* no warrenty implied; use at your own risk.
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* authored from 2015-2016 by Micha Mettke
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*/
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/*
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* ==============================================================
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*
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* API
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*
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* ===============================================================
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*/
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#ifndef NK_XLIB_H_
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#define NK_XLIB_H_
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#include <X11/Xlib.h>
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/* Font */
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typedef struct XFont XFont;
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NK_API XFont* nk_xfont_create(Display *dpy, const char *name);
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NK_API void nk_xfont_del(Display *dpy, XFont *font);
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NK_API struct nk_context* nk_xlib_init(XFont *font, Display *dpy, int screen, Window root, unsigned int w, unsigned int h);
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NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt);
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NK_API void nk_xlib_render(Drawable screen, struct nk_color clear);
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NK_API void nk_xlib_shutdown(void);
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NK_API void nk_xlib_set_font(XFont *font);
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#endif
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/*
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* ==============================================================
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*
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* IMPLEMENTATION
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*
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* ===============================================================
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*/
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#ifdef NK_XLIB_IMPLEMENTATION
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xresource.h>
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#include <X11/Xlocale.h>
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typedef struct XSurface XSurface;
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struct XFont {
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int ascent;
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int descent;
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int height;
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XFontSet set;
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XFontStruct *xfont;
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struct nk_user_font handle;
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};
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struct XSurface {
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GC gc;
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Display *dpy;
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int screen;
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Window root;
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Drawable drawable;
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unsigned int w, h;
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};
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static struct {
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struct nk_context ctx;
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struct XSurface *surf;
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Cursor cursor;
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Display *dpy;
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Window root;
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} xlib;
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#endif
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static unsigned long
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nk_color_from_byte(const nk_byte *c)
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{
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unsigned long res = 0;
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res |= (unsigned long)c[0] << 16;
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res |= (unsigned long)c[1] << 8;
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res |= (unsigned long)c[2] << 0;
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return (res);
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}
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static XSurface*
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nk_xsurf_create(int screen, unsigned int w, unsigned int h)
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{
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XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface));
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surface->w = w;
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surface->h = h;
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surface->dpy = xlib.dpy;
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surface->screen = screen;
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surface->root = xlib.root;
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surface->gc = XCreateGC(xlib.dpy, xlib.root, 0, NULL);
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XSetLineAttributes(xlib.dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter);
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surface->drawable = XCreatePixmap(xlib.dpy, xlib.root, w, h,
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(unsigned int)DefaultDepth(xlib.dpy, screen));
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return surface;
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}
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static void
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nk_xsurf_resize(XSurface *surf, unsigned int w, unsigned int h)
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{
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if(!surf) return;
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if (surf->w == w && surf->h == h) return;
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surf->w = w; surf->h = h;
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if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable);
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surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h,
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(unsigned int)DefaultDepth(surf->dpy, surf->screen));
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}
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static void
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nk_xsurf_scissor(XSurface *surf, float x, float y, float w, float h)
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{
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XRectangle clip_rect;
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clip_rect.x = (short)(x-1);
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clip_rect.y = (short)(y-1);
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clip_rect.width = (unsigned short)(w+2);
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clip_rect.height = (unsigned short)(h+2);
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XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted);
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}
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static void
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nk_xsurf_stroke_line(XSurface *surf, short x0, short y0, short x1,
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short y1, unsigned int line_thickness, struct nk_color col)
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{
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_stroke_rect(XSurface* surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col)
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{
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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if (r == 0) {
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XDrawRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
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} else {
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short xc = x + r;
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short yc = y + r;
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short wc = (short)(w - 2 * r);
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short hc = (short)(h - 2 * r);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+hc);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, x, yc+hc);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
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(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, x, y,
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(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
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}
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_fill_rect(XSurface* surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short r, struct nk_color col)
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{
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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if (r == 0) {
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XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
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} else {
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short xc = x + r;
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short yc = y + r;
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short wc = (short)(w - 2 * r);
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short hc = (short)(h - 2 * r);
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XPoint pnts[12];
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pnts[0].x = x;
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pnts[0].y = yc;
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pnts[1].x = xc;
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pnts[1].y = yc;
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pnts[2].x = xc;
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pnts[2].y = y;
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pnts[3].x = xc + wc;
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pnts[3].y = y;
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pnts[4].x = xc + wc;
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pnts[4].y = yc;
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pnts[5].x = x + w;
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pnts[5].y = yc;
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pnts[6].x = x + w;
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pnts[6].y = yc + hc;
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pnts[7].x = xc + wc;
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pnts[7].y = yc + hc;
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pnts[8].x = xc + wc;
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pnts[8].y = y + h;
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pnts[9].x = xc;
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pnts[9].y = y + h;
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pnts[10].x = xc;
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pnts[10].y = yc + hc;
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pnts[11].x = x;
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pnts[11].y = yc + hc;
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
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(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
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(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
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}
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}
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static void
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nk_xsurf_fill_triangle(XSurface *surf, short x0, short y0, short x1,
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short y1, short x2, short y2, struct nk_color col)
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{
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XPoint pnts[3];
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unsigned long c = nk_color_from_byte(&col.r);
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pnts[0].x = (short)x0;
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pnts[0].y = (short)y0;
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pnts[1].x = (short)x1;
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pnts[1].y = (short)y1;
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pnts[2].x = (short)x2;
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pnts[2].y = (short)y2;
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XSetForeground(surf->dpy, surf->gc, c);
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin);
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}
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static void
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nk_xsurf_stroke_triangle(XSurface *surf, short x0, short y0, short x1,
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short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col)
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{
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XPoint pnts[3];
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
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struct nk_color col)
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{
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int i = 0;
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#define MAX_POINTS 64
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XPoint xpnts[MAX_POINTS];
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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for (i = 0; i < count && i < MAX_POINTS; ++i) {
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xpnts[i].x = pnts[i].x;
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xpnts[i].y = pnts[i].y;
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}
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin);
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#undef MAX_POINTS
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}
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static void
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nk_xsurf_stroke_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
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unsigned short line_thickness, struct nk_color col)
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{
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int i = 0;
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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for (i = 1; i < count; ++i)
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_stroke_polyline(XSurface *surf, const struct nk_vec2i *pnts,
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int count, unsigned short line_thickness, struct nk_color col)
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{
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int i = 0;
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unsigned long c = nk_color_from_byte(&col.r);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XSetForeground(surf->dpy, surf->gc, c);
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for (i = 0; i < count-1; ++i)
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w,
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unsigned short h, struct nk_color col)
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{
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unsigned long c = nk_color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
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(unsigned)w, (unsigned)h, 0, 360 * 64);
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}
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static void
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nk_xsurf_stroke_circle(XSurface *surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short line_thickness, struct nk_color col)
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{
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unsigned long c = nk_color_from_byte(&col.r);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XSetForeground(surf->dpy, surf->gc, c);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
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(unsigned)w, (unsigned)h, 0, 360 * 64);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_stroke_curve(XSurface *surf, struct nk_vec2i p1,
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struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4,
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unsigned int num_segments, unsigned short line_thickness, struct nk_color col)
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{
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unsigned int i_step;
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float t_step;
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struct nk_vec2i last = p1;
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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num_segments = MAX(num_segments, 1);
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t_step = 1.0f/(float)num_segments;
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for (i_step = 1; i_step <= num_segments; ++i_step) {
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float t = t_step * (float)i_step;
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float u = 1.0f - t;
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float w1 = u*u*u;
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float w2 = 3*u*u*t;
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float w3 = 3*u*t*t;
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float w4 = t * t *t;
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float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x;
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float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y;
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nk_xsurf_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col);
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last.x = (short)x; last.y = (short)y;
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}
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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nk_xsurf_draw_text(XSurface *surf, short x, short y, unsigned short w, unsigned short h,
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const char *text, int len, XFont *font, struct nk_color cbg, struct nk_color cfg)
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{
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int tx, ty;
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unsigned long bg = nk_color_from_byte(&cbg.r);
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unsigned long fg = nk_color_from_byte(&cfg.r);
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XSetForeground(surf->dpy, surf->gc, bg);
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XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h);
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if(!text || !font || !len) return;
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tx = (int)x;
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ty = (int)y + font->ascent;
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XSetForeground(surf->dpy, surf->gc, fg);
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if(font->set)
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XmbDrawString(surf->dpy,surf->drawable,font->set,surf->gc,tx,ty,(const char*)text,(int)len);
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else
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XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len);
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}
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static void
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nk_xsurf_clear(XSurface *surf, unsigned long color)
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{
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XSetForeground(surf->dpy, surf->gc, color);
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XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h);
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}
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static void
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nk_xsurf_blit(Drawable target, XSurface *surf, unsigned int w, unsigned int h)
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{
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XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, w, h, 0, 0);
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}
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static void
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nk_xsurf_del(XSurface *surf)
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{
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XFreePixmap(surf->dpy, surf->drawable);
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XFreeGC(surf->dpy, surf->gc);
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free(surf);
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}
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XFont*
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nk_xfont_create(Display *dpy, const char *name)
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{
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int n;
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char *def, **missing;
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XFont *font = (XFont*)calloc(1, sizeof(XFont));
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font->set = XCreateFontSet(dpy, name, &missing, &n, &def);
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if(missing) {
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while(n--)
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fprintf(stderr, "missing fontset: %s\n", missing[n]);
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XFreeStringList(missing);
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}
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if(font->set) {
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XFontStruct **xfonts;
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char **font_names;
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XExtentsOfFontSet(font->set);
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n = XFontsOfFontSet(font->set, &xfonts, &font_names);
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while(n--) {
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font->ascent = MAX(font->ascent, (*xfonts)->ascent);
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font->descent = MAX(font->descent,(*xfonts)->descent);
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xfonts++;
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}
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} else {
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if(!(font->xfont = XLoadQueryFont(dpy, name))
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&& !(font->xfont = XLoadQueryFont(dpy, "fixed"))) {
|
|
free(font);
|
|
return 0;
|
|
}
|
|
font->ascent = font->xfont->ascent;
|
|
font->descent = font->xfont->descent;
|
|
}
|
|
font->height = font->ascent + font->descent;
|
|
return font;
|
|
}
|
|
|
|
static float
|
|
nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len)
|
|
{
|
|
XFont *font = (XFont*)handle.ptr;
|
|
XRectangle r;
|
|
if(!font || !text)
|
|
return 0;
|
|
|
|
if(font->set) {
|
|
XmbTextExtents(font->set, (const char*)text, len, NULL, &r);
|
|
return (float)r.width;
|
|
} else{
|
|
int w = XTextWidth(font->xfont, (const char*)text, len);
|
|
return (float)w;
|
|
}
|
|
}
|
|
|
|
void
|
|
nk_xfont_del(Display *dpy, XFont *font)
|
|
{
|
|
if(!font) return;
|
|
if(font->set)
|
|
XFreeFontSet(dpy, font->set);
|
|
else
|
|
XFreeFont(dpy, font->xfont);
|
|
free(font);
|
|
}
|
|
|
|
NK_API struct nk_context*
|
|
nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root,
|
|
unsigned int w, unsigned int h)
|
|
{
|
|
struct nk_user_font *font = &xfont->handle;
|
|
font->userdata = nk_handle_ptr(xfont);
|
|
font->height = (float)xfont->height;
|
|
font->width = nk_xfont_get_text_width;
|
|
xlib.dpy = dpy;
|
|
xlib.root = root;
|
|
|
|
if (!setlocale(LC_ALL,"")) return 0;
|
|
if (!XSupportsLocale()) return 0;
|
|
if (!XSetLocaleModifiers("@im=none")) return 0;
|
|
|
|
/* create invisible cursor */
|
|
{static XColor dummy; char data[1] = {0};
|
|
Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1);
|
|
if (blank == None) return 0;
|
|
xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0);
|
|
XFreePixmap(dpy, blank);}
|
|
|
|
xlib.surf = nk_xsurf_create(screen, w, h);
|
|
nk_init_default(&xlib.ctx, font);
|
|
return &xlib.ctx;
|
|
}
|
|
|
|
NK_API void
|
|
nk_xlib_set_font(XFont *xfont)
|
|
{
|
|
struct nk_user_font *font = &xfont->handle;
|
|
font->userdata = nk_handle_ptr(xfont);
|
|
font->height = (float)xfont->height;
|
|
font->width = nk_xfont_get_text_width;
|
|
nk_style_set_font(&xlib.ctx, font);
|
|
}
|
|
|
|
NK_API int
|
|
nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt)
|
|
{
|
|
struct nk_context *ctx = &xlib.ctx;
|
|
|
|
/* optional grabbing behavior */
|
|
if (ctx->input.mouse.grab) {
|
|
XDefineCursor(xlib.dpy, xlib.root, xlib.cursor);
|
|
ctx->input.mouse.grab = 0;
|
|
} else if (ctx->input.mouse.ungrab) {
|
|
XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0,
|
|
(int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y);
|
|
XUndefineCursor(xlib.dpy, xlib.root);
|
|
ctx->input.mouse.ungrab = 0;
|
|
}
|
|
|
|
if (evt->type == KeyPress || evt->type == KeyRelease)
|
|
{
|
|
/* Key handler */
|
|
int ret, down = (evt->type == KeyPress);
|
|
KeySym *code = XGetKeyboardMapping(xlib.surf->dpy, (KeyCode)evt->xkey.keycode, 1, &ret);
|
|
if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down);
|
|
else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down);
|
|
else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down);
|
|
else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down);
|
|
else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down);
|
|
else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down);
|
|
else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down);
|
|
else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down);
|
|
else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down);
|
|
else if (*code == XK_Escape) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down);
|
|
else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down);
|
|
else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down);
|
|
else if (*code == XK_Home) {
|
|
nk_input_key(ctx, NK_KEY_TEXT_START, down);
|
|
nk_input_key(ctx, NK_KEY_SCROLL_START, down);
|
|
} else if (*code == XK_End) {
|
|
nk_input_key(ctx, NK_KEY_TEXT_END, down);
|
|
nk_input_key(ctx, NK_KEY_SCROLL_END, down);
|
|
} else {
|
|
if (*code == 'c' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_COPY, down);
|
|
else if (*code == 'v' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_PASTE, down);
|
|
else if (*code == 'x' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_CUT, down);
|
|
else if (*code == 'z' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_UNDO, down);
|
|
else if (*code == 'r' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_REDO, down);
|
|
else if (*code == XK_Left && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
|
|
else if (*code == XK_Right && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
|
|
else if (*code == 'b' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down);
|
|
else if (*code == 'e' && (evt->xkey.state & ControlMask))
|
|
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down);
|
|
else {
|
|
if (*code == 'i')
|
|
nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down);
|
|
else if (*code == 'r')
|
|
nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down);
|
|
if (down) {
|
|
char buf[32];
|
|
KeySym keysym = 0;
|
|
if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol)
|
|
nk_input_glyph(ctx, buf);
|
|
}
|
|
}
|
|
}
|
|
XFree(code);
|
|
return 1;
|
|
} else if (evt->type == ButtonPress || evt->type == ButtonRelease) {
|
|
/* Button handler */
|
|
int down = (evt->type == ButtonPress);
|
|
const int x = evt->xbutton.x, y = evt->xbutton.y;
|
|
if (evt->xbutton.button == Button1)
|
|
nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
|
|
if (evt->xbutton.button == Button2)
|
|
nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
|
|
else if (evt->xbutton.button == Button3)
|
|
nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
|
|
else if (evt->xbutton.button == Button4)
|
|
nk_input_scroll(ctx, 1.0f);
|
|
else if (evt->xbutton.button == Button5)
|
|
nk_input_scroll(ctx, -1.0f);
|
|
else return 0;
|
|
return 1;
|
|
} else if (evt->type == MotionNotify) {
|
|
/* Mouse motion handler */
|
|
const int x = evt->xmotion.x, y = evt->xmotion.y;
|
|
nk_input_motion(ctx, x, y);
|
|
if (ctx->input.mouse.grabbed) {
|
|
ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
|
|
ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
|
|
XWarpPointer(xlib.dpy, None, xlib.surf->root, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y);
|
|
}
|
|
return 1;
|
|
} else if (evt->type == Expose || evt->type == ConfigureNotify) {
|
|
/* Window resize handler */
|
|
unsigned int width, height;
|
|
XWindowAttributes attr;
|
|
XGetWindowAttributes(dpy, win, &attr);
|
|
width = (unsigned int)attr.width;
|
|
height = (unsigned int)attr.height;
|
|
nk_xsurf_resize(xlib.surf, width, height);
|
|
return 1;
|
|
} else if (evt->type == KeymapNotify) {
|
|
XRefreshKeyboardMapping(&evt->xmapping);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
NK_API void
|
|
nk_xlib_shutdown(void)
|
|
{
|
|
nk_xsurf_del(xlib.surf);
|
|
nk_free(&xlib.ctx);
|
|
XFreeCursor(xlib.dpy, xlib.cursor);
|
|
nk_memset(&xlib, 0, sizeof(xlib));
|
|
}
|
|
|
|
NK_API void
|
|
nk_xlib_render(Drawable screen, struct nk_color clear)
|
|
{
|
|
const struct nk_command *cmd;
|
|
struct nk_context *ctx = &xlib.ctx;
|
|
XSurface *surf = xlib.surf;
|
|
|
|
nk_xsurf_clear(xlib.surf, nk_color_from_byte(&clear.r));
|
|
nk_foreach(cmd, &xlib.ctx)
|
|
{
|
|
switch (cmd->type) {
|
|
case NK_COMMAND_NOP: break;
|
|
case NK_COMMAND_SCISSOR: {
|
|
const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd;
|
|
nk_xsurf_scissor(surf, s->x, s->y, s->w, s->h);
|
|
} break;
|
|
case NK_COMMAND_LINE: {
|
|
const struct nk_command_line *l = (const struct nk_command_line *)cmd;
|
|
nk_xsurf_stroke_line(surf, l->begin.x, l->begin.y, l->end.x,
|
|
l->end.y, l->line_thickness, l->color);
|
|
} break;
|
|
case NK_COMMAND_RECT: {
|
|
const struct nk_command_rect *r = (const struct nk_command_rect *)cmd;
|
|
nk_xsurf_stroke_rect(surf, r->x, r->y, r->w, r->h,
|
|
(unsigned short)r->rounding, r->line_thickness, r->color);
|
|
} break;
|
|
case NK_COMMAND_RECT_FILLED: {
|
|
const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd;
|
|
nk_xsurf_fill_rect(surf, r->x, r->y, r->w, r->h,
|
|
(unsigned short)r->rounding, r->color);
|
|
} break;
|
|
case NK_COMMAND_CIRCLE: {
|
|
const struct nk_command_circle *c = (const struct nk_command_circle *)cmd;
|
|
nk_xsurf_stroke_circle(surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
|
|
} break;
|
|
case NK_COMMAND_CIRCLE_FILLED: {
|
|
const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd;
|
|
nk_xsurf_fill_circle(surf, c->x, c->y, c->w, c->h, c->color);
|
|
} break;
|
|
case NK_COMMAND_TRIANGLE: {
|
|
const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd;
|
|
nk_xsurf_stroke_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
|
|
t->c.x, t->c.y, t->line_thickness, t->color);
|
|
} break;
|
|
case NK_COMMAND_TRIANGLE_FILLED: {
|
|
const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd;
|
|
nk_xsurf_fill_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
|
|
t->c.x, t->c.y, t->color);
|
|
} break;
|
|
case NK_COMMAND_POLYGON: {
|
|
const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd;
|
|
nk_xsurf_stroke_polygon(surf, p->points, p->point_count, p->line_thickness,p->color);
|
|
} break;
|
|
case NK_COMMAND_POLYGON_FILLED: {
|
|
const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd;
|
|
nk_xsurf_fill_polygon(surf, p->points, p->point_count, p->color);
|
|
} break;
|
|
case NK_COMMAND_POLYLINE: {
|
|
const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd;
|
|
nk_xsurf_stroke_polyline(surf, p->points, p->point_count, p->line_thickness, p->color);
|
|
} break;
|
|
case NK_COMMAND_TEXT: {
|
|
const struct nk_command_text *t = (const struct nk_command_text*)cmd;
|
|
nk_xsurf_draw_text(surf, t->x, t->y, t->w, t->h,
|
|
(const char*)t->string, t->length,
|
|
(XFont*)t->font->userdata.ptr,
|
|
t->background, t->foreground);
|
|
} break;
|
|
case NK_COMMAND_CURVE: {
|
|
const struct nk_command_curve *q = (const struct nk_command_curve *)cmd;
|
|
nk_xsurf_stroke_curve(surf, q->begin, q->ctrl[0], q->ctrl[1],
|
|
q->end, 22, q->line_thickness, q->color);
|
|
} break;
|
|
case NK_COMMAND_RECT_MULTI_COLOR:
|
|
case NK_COMMAND_IMAGE:
|
|
case NK_COMMAND_ARC:
|
|
case NK_COMMAND_ARC_FILLED:
|
|
default: break;
|
|
}
|
|
}
|
|
nk_clear(ctx);
|
|
nk_xsurf_blit(screen, surf, surf->w, surf->h);
|
|
}
|
|
#endif
|